https://www.sarahraven.com/flowers/bulbs/dahlias/dahlia-urchin.htm229208Dahlia 'Urchin'https://sarahraven.images.blucommerce.com/sarahraven/product/229208.jpg?auto=format%2Ccompress&bluhash=726da37f08ebbfe7b8fa892ad981e302&w=200&h=200&fit=crop&s=fef1ef6e22ef70933dd981685bd486ad3.95GBP3.95OutOfStockFlowers/Bulbs/DahliasFlowers/BulbsFlowersDahlia 'Urchin' is the spiniest of all the crimsons, with each petal split at its tip to make it even more spiky.